Finding the Fourth Proportional to 78,374.38, 108,156.96 and 42,564.99

Step by Step Solution

1. Step 1: Write the proportion equation
   78,374.38 : 108,156.96 = 42,564.99 : x
2. Step 2: Convert to fraction form
   78,374.38/108,156.96 = 42,564.99/x
3. Step 3: Cross multiply
   78,374.38x = 108,156.96 × 42,564.99
4. Step 4: Simplify right side
   78,374.38x = 4,603,699,708.01
5. Step 5: Solve for x
   x = 4,603,699,708.01/78,374.38
6. Step 6: Final answer
   x = 58,739.85